# Posts by liv

Total # Posts: 81

**chemistry**

What is the condensed formula for 6-chloro-2-methyl-3-heptyne?

**Organic Chem question**

What would be the product when 3-bromoprop-1-ene and cyclohexane-1,3-dione react with excess NaOH?

**Integral Calculus**

How to determine the order and degree of this differential equation, (y''')^2-2(y')^6=x-2

**Calculus Antiderivatives**

Find a function whose derivative is a constant k

**Calculus Reposted**

A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point? dy/dx=-y/x is my change rate so far, should i substitute the coordinates (x,y) to the equation or just ...

**Calculus**

Suppose that the price p, in thousand pesos, and the number of sales x(in hundreds) of a certain item can be modeled by the equation 5p+4x+px=100. Suppose also that the price is increasing at the rate of $200 per year. How fast is the quantity changing at the instant when the ...

**Calculus- Related rates**

Is dA=4/3?

**Calculus- Related rates**

So dr/dt is equals to 1/9pi? or i have miscalculated again?

**Calculus**

A point is moving along the curve xy=12. When the point is at (4,3), the x-coordinate decreases at the rate of 2cm/sec. How fast is the y-coordinate changing at that point?

**Derivative-Optimization Problems**

You plan to enclosed part of a rectangular farmland with a fence. Since one side of it is bounded by a river, you only need to fence the other three sides. if you have enough budget to buy 600m of fencing material, what is the largest area you can enclose?

**Math**

Kailey's recipe calls for 1 1/2 cups of oil to make one large batch of cookies. How much oil will she need for 1/4 batch?

**calculus**

Srry the question is incomplete... please help with these questions a. Is g(x) continuous at x=1 b. What type of discontinuity does it have

**calculus**

Let g(x)={x^2-x-2 if x is not equal to 1 {0 if x=1

**Calculus**

Can you please help me get the solution to this limit without using squeeze theorem and l'hopitals rule lim x to 0 of x^3 sin(1/x) lim x to 0 of x^2 sin^2(1/x)

**Nature Science**

If a typhoon hits an island without any person, is that a disaster?

**Pre-calculus**

Convert cartesian equation to polar form 1. x^2+y^2=4x 2. (x^2+y^2)^2=6(x^2-y^2)

**Science**

Direction: Place a big mug, a plastic drinking glass and an empty glass bottle on the table with the big mug at the center, the drinking glass at the edge of the table, and the bottle anywhere on the table. With the force , shake the table and observe what happens to the mug, ...

**Trigonometry**

Evaluate arctan(cot10Pi/9) sec(arccos(-1/6) csc(arcsec(5/3) sin(2 arccos(sqrt5/5)

**Trigonometry**

arctan(cot10Pi/9)

**Trigonometry**

Evaluate please: a.) arcsin(sin 13pi/16) b.) arccos(cos[-pi/18]) c.) arcsin(sin pi/18 d.) arcsec(-?2) e.) arctan(-?3/3)

**Pre-calculus**

prove the identity sin2x-sin2y/sin2x+sin2y=tan(x-y)/tan(x+y)

**Pre-calculus**

prove sin(x+y)+sin(x-y)/cos(x+y)+cos(x-y)=tanx

**Pre-calculus**

If sin2x=7/25, siny=-2/sq root of 13, cot y>0, and -pi/4<x<pi/4, find sin(2y-a)

**Pre-calculus**

Prove the following identities. 1. 1+cosx/1-cosx = secx + 1/secx -1 2. (tanx + cotx)^2=sec^2x csc^2x 3. cos(x+y) cos(x-y)= cos^2x - sin^2y

***** MATH, PLEASE HELP!**

Solve 5x^-5/x^-4x+3. THANK YOU!

**MATH - HELP PLEASE**

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

**MATH - PLEASE HELP!!**

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

**Physics**

An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

**Trigonometry**

how do i evaluate this? 1+tan 200(degrees) tan 80(degrees)/tan200(degrees)-tan 80(degrees)

**Pre-calculus**

Evaluate sin16° cos29° + cos16° sin29°

**Pre-calculus**

Evaluate sin 7pi/12. Using sum, difference, and cofunction identities

**Pre-calculus**

Find the acute angle between the lines 2x-3y-6=0 and x+5y-20=0

**Pre-calculus**

Derive an identity that transforms sin(α+β+γ) into a sum of products of sines and/or cosines of the individual numbers α, β, γ.

**Pre-calculus**

If sin x=-3/5 and sec x>0, find all the other circular function values of x

**physics**

a car starts from rest and accelerates uniformly to reach a speed of 21 m/s in 7.0s. What was the speed of the object after 2.0 seconds?

**Trigonometry**

Show that the following are not trigonometric identities 1.tan 2x = 2tan x 2. sec x= sqr rt 1+tan^2 x 3. sin(x+y)=sin x +sin y

**algebra**

.75(8x-24)-4x=-182 -492-18+328=-182 -510+328=-182 -182=-182 if x=-82

**algebra**

solve for x 0.75(8x-24)-4x=-182 6x-18-4x=-182 2x=-182+18 2x=-164 x=-82

**Trigonometry**

A weight hanging from the end of a spring is pulled 8 inches below its rest position. When released, the weight then exhibits simple harmonic motion, with period 1/2 second. Find an equation describing its motion

**Physics**

Determine the mass of a pasteboard with area 75.0cm

**Maths**

all the integer values of -4 < 2x -6 < 12

**Math**

3P = s Ps = 3

**Math**

The formula for finding the perimeter of an equilateral triangle is P = 3s. How can you transform the formula so that it can be used to determine the length of one side of the triangle when given the perimeter?

**math with application**

If 12 % of a radioactive substance decays in 7 hours, what is the half-life of the substance? Carry out all calculations exactly, then round the final answer to three decimal places. The half life is what hours?

**Math**

25

**Math**

Insert grouping symbols to make the following sentence true: 160 = 8 * 16 + 12 - 4 / 2

**The Giver**

It's D because I am in connection acedmey

**Geometry**

A rectangular quilt's length is twice the length of a rectangular picture, and the quilt's width is three times the width of the same picture. The area of the picture is 2 square feet. What is the area of the quilt, in square feet?

**factorization**

How did you get 891? I'm confused on that... PLZ explain!

**Do newspapers, magazines, television, radio, movie**

Im not sure what directing to go for this essay, i have changed it 3 times. can someone tell me if this would be correct? The answer is media doesn't decide what is important, The creators put out there what they think will catch peoples eyes, boring doesn't sell. Most...

**Stats**

But, we know that the 5 came up two times in the first eight rolls.

**Stats**

Sally rolls a fair number cube 8 times and gets a 5 twice. What is the experimental probability that on her next roll, she will roll a 5? I know that experimental probability is f/n, so the number of trials is now 9, but is the number of times Sally roll a 5 two times or three?

**Math**

You want to conduct a survey to find out what sport the students at your school prefer to play. a) You interview 20 boys playing football at lunch. Is this a random sample? explain b) The survey question you ask is, ''What is your favorite sport to play?'' Is ...

**Science 8th grade**

What gets hot and cold faster, solid or gas and why?

**chemistry PLEASE HELP**

How many milligrams of sodium azide will produce 8.35 Liters of N2 at STP???

**Math I need help Please help me!!!!!!**

A car is traveling at a rate of 54 miles per hour. What is the car's rate in feet per second? How many feet will the car travel in 20 seconds? In your computations, use the fact that 1 mile is equal to 5280 feet.

**Physics**

The cup becomes positively charged and I know this 100% the right answer.

**Biochem**

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...

**Biochem**

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...

**Algebra**

the phone company has two plans for cell phones. the first plan calls for a monthly fee of 35.00 with unlimited calling. The other plan is a monthly fee of 15.00, with a 0.50 fee for every minute over 100 used in a month. What is the greatest number of minutes that you can use...

**math**

first do what is in perenthises then do exponints then multiply then divide then add then subtract. you can remember this by doing p e m d a s pemdas!!!!!!!!!!

**Jobs(9th)**

you should reasearch some real interior designers and look up all of your questions

**math**

6/?=18/?=?/12 (fractions)

**Science**

the answer is letter c think of food food is chemical energy

**geometry**

40 multiplyed by 12 equalls area

**math help needed**

thanks CON

**math help needed**

what is 5 percent of 40

**Geometry**

plus wouldnt the answer be 36 because there both square and there distance isnt far

**Geometry**

whats a ratino and then ill help because i have no idea what that means

**math**

i know but thanks anyway

**math**

what

**math**

What is 5 percent of 40

**math**

you dot need a calculator unless you memorized the area and you don't need tape unless its used to hold down string

**physics**

A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as indicated below. Its center of mass is a distance d=0.200 m from the pivot axis and its moment of inertia about an axis through the CM and parallel ...

**math**

5,25,50,10 what are the next 3 numbers?

**rounding**

80

**Chemistry**

How many grams of KOH will be needed to boil a liter of cold water?

**Geometry**

Point P lies in plane M. How many circles are there in plane M that have center P and a circumference of 6π inches? a) none b) one c) two d) four e) more than four

**Math**

aflyercracker

**AP World History**

I am analyzing the same DBQ, is this a good thesis? Both Han China and the Roman Empire were highly advanced in the development of technology, and both empires had very practical, organized and precise mechanized skills, yet the Romans valued their technology for its beauty ...

**mat?h**

What would the answer be to 4m+(-3n)+n? -3n squared +4m 4m+(-3n)+n = 4m + n(-3 +1) = 4m +(-2n) = 2(2m -n)